Re: linux-next: Tree for Apr 26

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On Sat, Apr 27, 2013 at 8:54 AM, Michal Marek <mmarek@xxxxxxx> wrote:
> Dne 27.4.2013 00:01, Yann E. MORIN napsal(a):
>> Michal, Sedat, All,
>>
>> On Fri, Apr 26, 2013 at 01:13:33PM +0200, Michal Marek wrote:
>>> On 26.4.2013 13:08, Michal Marek wrote:
>>>> On 26.4.2013 12:49, Sedat Dilek wrote:
>>>>> With reverting all kbuild-next commits I was able to build again.
>>>>>
>>>>>       Revert "kconfig: implement KCONFIG_PROBABILITY for randconfig"
>>>>>       Revert "kconfig: allow specifying the seed for randconfig"
>>>>>       Revert "kconfig: fix randomising choice entries in presence of
>>>>> KCONFIG_ALLCONFIG"
>>>>>       Revert "kconfig: do not override symbols already set"
>>>>>       Revert "kconfig: fix randconfig tristate detection"
>>>>
>>>> I did the same, then applied all the kconfig commits once more and did a
>>>> git bisect with this script:
>>>>
>>>> #!/bin/sh
>>>>
>>>> cp config-bad .config
>>>> make silentoldconfig </dev/null
>>>>
>>>> This resulted in
>>>>
>>>> 7ded2624f8988bd22819a60a6000ba6b7091db89 is the first bad commit
>>>> commit 7ded2624f8988bd22819a60a6000ba6b7091db89
>>>> Author: Yann E. MORIN <yann.morin.1998@xxxxxxx>
>>>> Date:   Sun Mar 10 16:34:10 2013 +0100
>>>>
>>>>     kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG
>>>>
>>>> The commit id is different, because it is reverted and applied again. Yann?
>>>
>>> Commit 422c809 ("kconfig: fix randomising choice entries in presence of
>>> KCONFIG_ALLCONFIG") reverts cleanly and reverting it fixes the bug. So
>>> there is a plan B.
>>
>> I do not understand how reverting 422c809 could have fixed the
>> silentoldconfig issue: as I previously reported, it already happens on
>> Linus' master.
>>
>> I tried again jsut a few minutes ago against:
>>     d7d7271: Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
>> and it is already broken, although 422c809 is not yet in Linus' tree:
>>
>>     $ make silentoldconfig </dev/null
>>     scripts/kconfig/conf --silentoldconfig Kconfig
>>     warning: (IA32_EMULATION) selects COMPAT_BINFMT_ELF which has unmet
>>     direct dependencies (COMPAT && BINFMT_ELF)
>>     *
>>     * Restart config...
>>     *
>>     *
>>     * Paravirtualized guest support
>>     *
>>     Paravirtualized guest support (PARAVIRT_GUEST) [N/y/?] (NEW) aborted!
>>
>>     Console input/output is redirected. Run 'make oldconfig' to update configuration.
>>
>>     make[1]: *** [silentoldconfig] Error 1
>>     make: *** [silentoldconfig] Error 2
>>
>> Or did I miss something?
>>
>> However, oldconfig just works (with an error for each new symbol):
>>     $ make oldconfig </dev/null
>>     [--SNIP--]
>>       NOP USB Transceiver Driver (NOP_USB_XCEIV) [N/m/?] (NEW)
>>     Error in reading or end of file.
>>
>>     #
>>     # configuration written to .config
>>     #
>
> That (silent)oldconfig with stdin redirection throws an error if it
> encounters a new option is expected and correct. The bug here is that
> _normal_ oldconfig run apparently does not set all the options. I.e.
>
> $ yes "" | make oldconfig; make silentoldconfig </dev/null
>
> should always pass.
>

Yupp. That should be always tested... before sending patches and
committing to a repo :-).
Anyway, thanks for taking care and solving fast to all involved folks!

- Sedat -

> Michal
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